The Scarr-Rowe Interaction in Complete Seven-Year WISC Data from the Louisville Twin Study: Preliminary Report

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• 作者：Eric Turkheimer ; Christopher E. Beam ; Deborah W. Davis
• 关键词：GE interaction ; Wechsler intelligence scale for children ; Socioeconomic status
• 刊名：Behavior Genetics
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：45
• 期：6
• 页码：635-639
• 全文大小：607 KB
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• 作者单位：Eric Turkheimer (1)
  Christopher E. Beam (2)
  Deborah W. Davis (3)
  
  1. Department of Psychology, University of Virginia, PO Box 400400, Charlottesville, VA, 22904-4400, USA
  2. University of Southern California, Los Angeles, USA
  3. University of Louisville, Louisville, USA
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Human Genetics
  Neurosciences
  Evolutionary Biology
  
• 出版者：Springer Netherlands
• ISSN：1573-3297

文摘

We examine updated Wechsler IQ data in 7-year old twins from the Louisville Twin Study for evidence of an interaction between the heritability of IQ and socioeconomic status. Data records that had never been entered were recovered, allowing us to increase previously reported sample sizes by more than 20 %. Twin families were assigned socioeconomic status scores using a Hollingshead index based on parental education and occupation. A structural equation model in which genetic and environmental variances were modeled as squared linear functions of SES provided ambiguous replication of earlier findings from the National Collaborative Perinatal Project: relations between SES and heritability for performance and full scale IQ were in the same direction as the previous report, but at p < 0.07. As was the case in Turkheimer et al. (Psychol Sci 14(6):623-28, 2003), no interaction was found for VIQ. These results cannot yet be taken as a definitive replication of Turkheimer et al. (Psychol Sci 14(6):623-28, 2003). Many more measurement occasions, subtests and environmental moderators remain to be analyzed. Keywords GE interaction Wechsler intelligence scale for children Socioeconomic status